Cytological studies on the genus Holcoglossum (Orchidaceae)

	Cytological studies on the genus Holcoglossum (Orchidaceae)
	Jin, Xiao-Hua ; Zhang, Ting ; Gu, Zhi-Jian ; Li, De-Zhu
通讯作者	dzl@mail.kib.ac.cn
	2007-06-01
发表期刊	BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
ISSN	0024-4074
卷号	154 期号:2 页码:283-288
摘要	The karyotypes of ten species of Holcoglossum (Orchidaceae), a highly endangered and diversified genus from China, were investigated to study the infrageneric relationships, biogeography, and speciation patterns in the Hengduan Mountains. The karyotype formulae of the studied species are as follows: 2n = 38 = 20m + 18sm in H. subulifolium, 2n = 38 = 22m + 16sm in H. amesianum, 2n = 38 = 26m + 12sm (6 SAT) in H. lingulatum, 2n = 38 = 26m + 12sm in H. wangii, 2n = 38 = 10m + 28sm in H. kimballianum, 2n = 38 = 14m + 22sm + 2st in H. flavescens, 2n = 38 = 24m + 12sm + 2st in H. rupestre, 2n = 38 = 14m + 20sm + 4st in H. sinicum, 2n = 38 = 16m + 14sm + 8st in H. weixiense, and 2n = 76 in H. tsii. The karyotypes of two tropical species, H. amesianum and H. subulifolium, are the most primitive in the genus, whereas those of four temperate alpine species, H. sinicum, H. rupestre, H. weixiense, and H. flavescens, are more advanced. H. tsii is a tetraploid and H. rupestre may be one of its ancestors. The low frequency of polyploidy in Holcoglossum in the Hengduan Mountains region supports the conclusion that chromosome stasis during rapid speciation is common there. (C) 2007 The Linnean Society of London.
关键词	Biogeography Chromosome Stasis Hengduan Mountains Karyotypes Tetraploid
学科领域	Plant Sciences
收录类别	SCI
语种	英语
WOS记录号	WOS:000247225400012
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/2759
专题	中国科学院东亚植物多样性与生物地理学重点实验室
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650204, Peoples R China 2.Chinese Acad Sci, Herbarium PE, Inst Bot, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Jin, Xiao-Hua,Zhang, Ting,Gu, Zhi-Jian,et al. Cytological studies on the genus Holcoglossum (Orchidaceae)[J]. BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,2007,154(2):283-288.
APA	Jin, Xiao-Hua,Zhang, Ting,Gu, Zhi-Jian,&Li, De-Zhu.(2007).Cytological studies on the genus Holcoglossum (Orchidaceae).BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,154(2),283-288.
MLA	Jin, Xiao-Hua,et al."Cytological studies on the genus Holcoglossum (Orchidaceae)".BOTANICAL JOURNAL OF THE LINNEAN SOCIETY 154.2(2007):283-288.

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